body {
    background-image: url(./img/beijing.jpg);
    background-size: cover;
    background-repeat: no-repeat;
}

.main {
    display: flex;
    margin: 60px;
}

.main-1 {
    width: 400px;
    height: 600px;
    margin-left: 20px;
    background-color: bisque;
    opacity: .8;
    border-radius: 20px;
    box-shadow: 5px 5px 5px rgba(0, 0, 0, .3);
}

.first {
    font-size: 20px;
    padding: 20px;
}

.second {
    padding: 20px;
    font-weight: bold;
}

.three {
    padding: 20px;
    font-style: italic;
}

.four {
    padding: 20px;
    font-variant: small-caps;
}

.main-2 {
    width: 400px;
    height: 600px;
    margin-left: 50px;
    background-color: bisque;
    opacity: .8;
    border-radius: 20px;
    box-shadow: 5px 5px 5px rgba(0, 0, 0, .3);
}

.one {
    font-family: '楷体', serif;
    font-size: 25px;
    font-weight: bold;
    text-align: center;
}

.two {
    padding: 10px;
    padding-bottom: 5px;
    font-size: 20px;
    line-height: 40px;
}

.main-3 {
    width: 400px;
    height: 600px;
    margin-left: 50px;
    background-color: bisque;
    opacity: .8;
    border-radius: 20px;
    box-shadow: 5px 5px 5px rgba(0, 0, 0, .3);
}

.last-1 {
    font-family: '楷体', serif;
    font-size: 22px;
    font-weight: bold;
    text-align: center;
}
.last{
    padding: 10px;
}
.last-2 {
    font-weight: lighter;
}

.last-4 {
    font-weight: bold;
}

.last-5 {
    font-weight: bolder;
}

.last-6 {
    font-weight: 100;
}

.last-7 {
    font-weight: 400;
}

.last-8 {
    font-weight: 700;
}